CN202348244U - Anchoring compensation device for branch well sieve tube - Google Patents
Anchoring compensation device for branch well sieve tube Download PDFInfo
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- CN202348244U CN202348244U CN2011205412349U CN201120541234U CN202348244U CN 202348244 U CN202348244 U CN 202348244U CN 2011205412349 U CN2011205412349 U CN 2011205412349U CN 201120541234 U CN201120541234 U CN 201120541234U CN 202348244 U CN202348244 U CN 202348244U
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Abstract
The utility model discloses an anchoring compensation device for a branch well sieve tube. The anchoring compensation device is composed of hydraulic seat sealing part, a releasing part, a compensating part and an anchoring part, wherein four main functions as follows: two-level hydraulic cylinder, rotary anchoring, upwards lifted or rotary releasing and drillable compensation casing, are realized in a set of device. The anchoring compensation device anchors all the branch well sieve tubes in a borehole by utilizing four powerful anchoring pawls to prevent the sieve tube series from moving from branch boreholes to a main borehole in future production, thereby blocking downward movement of a production pipe in the main borehole to affect production of an oil well. The anchoring compensation device enables the sieve tubes in the branch boreholes to support the well walls and prevent sands, so that service life of branch boreholes can be prolonged, and yield of a single well can be improved.
Description
Technical field
The utility model is the completion tool that is used for oil-gas reservoir fishbone Multilateral Wells about a kind of, relates in particular to a kind of Multilateral Wells screen casing grappling compensation arrangement.
Background technology
Fishbone Multilateral Wells technology is the significant technology in 21 century drilling well field, and its core is to be master's fishbone Multilateral Wells completion technique with completion tool research.The fishbone well is the comparatively special Multilateral Wells of a kind of form; Its main borehole is parallel to the oil reservoir horizontal-extending usually; Each branch well hole gets out from the main borehole side direction, and the spatial distribution of each branch's eye and main borehole be basically at same oil reservoir, and it is shorter that branch well hole and main borehole are compared length.The fishbone Multilateral Wells can obtain maximum aggregate level displacement from a well, on identical or different direction, drill many covers oil-gas Layer of different depth.The low permeability pay, heavy oil reservoirs, multi-layer thin oil reservoir, crack property oil reservoir, Complex Fault Block Oil Reservoir and the exploitation coal bed gas that are applicable to clastic, carbonatite, metamorphic rock, magmatic rock reservoir and are applicable to new old filed.Therefore obtained in recent years using widely.
The fishbone Multilateral Wells is to change the distribution of the single horizontal trajectory of horizontal well in oil reservoir the space spread of a plurality of horizontal segments in oil reservoir into, with the increase swept volume, thereby improves well yield and ultimate recovery.This technology has solved leans on simple increase horizontal section length to be difficult to improve the problem of oil reservoir development degree, to have improved development effectiveness in the oil reservoir development.At present the completion mode of fishbone Multilateral Wells has four kinds of barefoot completion, gravel pack completion, slotted liner completion and side direction tie-back system completions substantially.From the drilling well angle, the simplest Multilateral Wells is with very the complicated branch wellblock is not little, but completion tool and structure differ widely,
Existing fishbone Multilateral Wells sieve tube completion art; Be in branch well hole, to be lowered to screen casing; In addition grappling of anchoring device is not adopted at the screen casing top, can not prevent that screen casing from gliding because of gravity produces, and makes the screen casing in the branch well hole not have the borehole wall and the sand control effect supported; Shorten the application life of branch well hole, do not reached the purpose that improves well yield.
In view of this, the inventor relies on relevant design and manufacturing experience for many years, proposes a kind of Multilateral Wells screen casing grappling compensation arrangement, to overcome the defective of prior art.
The utility model content
The purpose of the utility model is to provide a kind of Multilateral Wells screen casing grappling compensation arrangement, can prevent that screen casing from gliding because of gravity produces, and makes the screen casing in the branch well hole play the borehole wall and the sand control effect supported, and to prolong the application life of branch well hole, improves well yield.
The purpose of the utility model is achieved in that a kind of Multilateral Wells screen casing grappling compensation arrangement, and this grappling compensation arrangement comprises pipe in, and interior pipe middle part is provided with an outward flange; The interior pipe external top connection in upper end, stacks pipe nipple in the top connection upper end; The external fluid cylinder outer tube in top connection lower end is between fluid cylinder outer tube and interior pipe and be positioned at that side seal is provided with first annular piston on the flange; Side seal is provided with second annular piston under flange; Second annular piston extends upward and is provided with tube connector; Be resisted against the lower end of first annular piston behind the tube wall hermetically passing fluid cylinder outer tube of tube connector and the gap between the interior Pipe Flange, the fluid cylinder outer tube is connected by first shear pin with second annular piston; Be respectively equipped with open-work on the said inner pipe wall with first annular piston and the second annular piston upside space conducting; The external piston tube in the said second annular piston lower end, said interior pipe lower end is circumscribed with the distinguish tine; Said distinguish tine constitutes to extending below and be a plurality of corpus unguis that circumferential interval is provided with by body with along body; The circumference internal diameter that corpus unguis surrounds is up-small and down-big flaring shape, sheathed one give up pipe and connected by second shear pin in the body of said distinguish tine; The said pipe of giving up connects a bumping post in the lower end, the taper stay pipe that bumping post lower end fixing sheathed is up-small and down-big, the circumference side of said taper stay pipe and the corresponding contact of the medial surface of a plurality of corpus unguis; A plurality of corpus unguis that said distinguish tine is provided with by circumferential interval are external in the upper end of a central tube; Upper end overcoat one splicing sleeve of central tube is also connected by the 3rd shear pin, and the top of said splicing sleeve is resisted against the bottom of piston tube; Said splicing sleeve, piston tube are identical with the external diameter of fluid cylinder outer tube, and one can bore compensating jacket is sheathed on the outer wall of splicing sleeve, piston tube and fluid cylinder outer tube and extends upward to the top connection and the drill pipe nipple outside; The external tubulose anchor fluke seat in the lower end of said central tube, said anchor fluke seat top forms a plurality of pin joint seats that are uniformly distributed with around the central tube outer wall, and anchor fluke seat bottom is provided with the external screw thread that connects screen casing; Articulate an anchor fluke on said each pin joint seat; Said anchor fluke is the tube wall that axially is posted by central tube; Its bottom and pin joint seat articulate, and said anchor fluke upper end medial surface forms from bottom to top gradually away from the inclined-plane of central tube outer wall, and the said anchor fluke outside is along being circumferentially with the serrate slot that can be anchored in the borehole wall; The external tubulose cone in said splicing sleeve bottom, fit in the conical surface of said tubulose cone and the inclined-plane of a plurality of anchor flukes.
In a preferred embodiments of the utility model; Said bottom of boring the compensating jacket cover inwardly is convexly equipped with an annular boss; The outer wall lower end of said splicing sleeve is to forming the end difference that contracts in by annular boss; Said annular boss is arranged in this end difference, and the bottom of this annular boss is resisted against the top of tubulose cone.
In a preferred embodiments of the utility model, the said compensating jacket cover that bores is processed by carbon fiber enhancing thermoset phenolic resin material.
In a preferred embodiments of the utility model, said taper stay pipe is sheathed on the bumping post lower end and is fixed by the baffle ring that a spiral is connected in the bumping post bottom.
In a preferred embodiments of the utility model; The common formation of the outer wall of a plurality of corpus unguis of said distinguish tine one periphery; This periphery is provided with external screw thread; The upper end of said central tube is provided with internal thread, and after a plurality of corpus unguis inboard was resisted against the side of taper stay pipe, the external screw thread on the said periphery was threaded with the internal thread formation of central tube upper end.
In a preferred embodiments of the utility model, the inwall of said tubulose cone fits in the outer wall of central tube slidably; The inwall of said tubulose cone is provided with an annular groove, is provided with a tight lock ring in the annular groove; Said tight lock ring internal face and central tube outer wall are provided with and stop the tubulose cone along teeth sliding on the central tube.
In a preferred embodiments of the utility model, it is identical with the central tube periphery circular-arc that the cross section of said anchor fluke is, and anchor fluke is the wide shape in narrow centre, two ends vertically; After being the tube wall that axially is posted by central tube, fixes by said each anchor fluke by spot welding.
In a preferred embodiments of the utility model, said anchor fluke and pin joint seat correspondence respectively are provided with four; Said anchor fluke and anchor fluke seat are to be processed by 42CrMo or 35CrMo.
In a preferred embodiments of the utility model, the binding site of said distinguish tine body and corpus unguis is convexly equipped with a stop ring to the inside; The said pipe upper end tube wall of giving up is provided with a bulge loop laterally, said bulge loop lateral surface and distinguish tine inboard wall of tube body sealing sliding-contact; Said tube wall of giving up pipe contacts with the medial surface of said stop ring.
In a preferred embodiments of the utility model, the bottom of said piston tube and the top of splicing sleeve convex with to the inside respectively and are resisted against distinguish tine flange of pipe body slidably.
From the above mentioned; The Multilateral Wells screen casing grappling compensation arrangement of the utility model; By hydraulic setting, give up, four parts of compensation and grappling form, in a covering device, realized the twin-stage fluid cylinder, rotated grappling, on carry or rotational release and can bore four major functions such as compensating jacket.This grappling compensation arrangement utilizes four powerful anchor flukes that whole Multilateral Wells screen casing string is anchored in the well, prevent the screen casing string in producing in the future from branch well hole play in main borehole, hinder being lowered to of flow string in the main borehole and influence the production of oil well.This pipe grappling compensation arrangement plays the screen casing in the branch well hole and supports the borehole wall and sand control effect, can prolong the application life of branch well hole, improves well yield.
Description of drawings
Following accompanying drawing only is intended to the utility model is done schematic illustration and explanation, does not limit the scope of the utility model.Wherein,
Fig. 1: be the structural representation of the utility model Multilateral Wells screen casing grappling compensation arrangement.
Figure 1A: for going up the segment structure enlarged diagram among Fig. 1.
Figure 1B: be following segment structure enlarged diagram among Fig. 1.
Fig. 2: be the structural representation of distinguish tine in the utility model.
Fig. 3 A: be the structural representation of anchor fluke seat in the utility model.
Fig. 3 B: be the schematic top plan view of Fig. 3 A.
Fig. 4 A: be the structural representation of anchor fluke in the utility model.
Fig. 4 B: be the schematic top plan view of Fig. 4 A.
Fig. 4 C: for looking sketch map in the right side of Fig. 4 A.
Fig. 4 D: for looking sketch map in the left side of Fig. 4 A.
Fig. 5 A: be the structural representation of binding ring in the utility model.
Fig. 5 B: be the schematic side view of Fig. 5 A.
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
Shown in Fig. 1, Figure 1A, Figure 1B, the utility model provides a kind of Multilateral Wells screen casing grappling compensation arrangement 100, and this grappling compensation arrangement 100 comprises pipe 7 in, and interior pipe 7 middle parts are provided with an outward flange 71; In the pipe external top connection 3 in 7 upper ends, in this embodiment, said top connection 3 and interior pipe 78 are fixed stacks pipe nipple 1 in top connection 3 upper ends for being threaded and being pinned by second anti-rotation; The external fluid cylinder outer tube 5 in top connection 3 lower ends, in this embodiment, said top connection 3 and fluid cylinder outer tube 5 are for being threaded and fixing by first anti-rotation pin 4, and both bonding surfaces are provided with cushion rubber 6; Between fluid cylinder outer tube 5 and interior pipe 7 and be positioned at the two sides that side seal on the flange 71 is provided with first annular piston, 10, the first annular pistons 10 and be provided with cushion rubber 9; Be provided with second annular piston 11 in 71 times side seals of flange; Second annular piston, 11 medial surfaces are provided with cushion rubber 14; Second annular piston 11 extends upward and is provided with tube connector 111; Be resisted against the lower end of first annular piston 10 behind the tube wall hermetically passing fluid cylinder outer tube 5 of tube connector 111 and the gap between the interior Pipe Flange 71, the lateral surface of interior Pipe Flange 71 is provided with cushion rubber 12, and fluid cylinder outer tube 5 is connected by first shear pin 13 with second annular piston 11; Be respectively equipped with open- work 72,73 in said on pipe 7 tube walls with first annular piston 10 and the 11 upside space conductings of second annular piston; The external piston tube 16 in said second annular piston 11 lower ends, both are for being threaded and being fixed by the 3rd anti-rotation pin 15, and said interior pipe 7 lower end screw threads are circumscribed with distinguish tine 18 and fixing by the 4th anti-rotation pin 17, and both are provided with cushion rubber 19 between the bonding surface; As shown in Figure 2; Said distinguish tine 18 is to constitute to extending below and be a plurality of corpus unguis 182 that circumferential interval is provided with by body 181 with along body 181; The circumference internal diameter that corpus unguis 182 surrounds is up-small and down-big flaring shape; Sheathed one give up pipe 21 and connect the bottom of pipe 7 in the top of the pipe 21 of giving up is resisted against in the body 181 of said distinguish tine by second shear pin 24; The said pipe of giving up connects a bumping post 22 in the 21 lower end screw threads, and both are provided with cushion rubber 23 between the bonding surface, the taper stay pipe 26 that bumping post 22 lower ends fixing sheathed are up-small and down-big, the circumference side of said taper stay pipe 26 and the corresponding contact of the medial surface of a plurality of corpus unguis 182; A plurality of corpus unguis 182 that said distinguish tine 18 is provided with by circumferential interval are external in the upper end of a central tube 25; Upper end overcoat one splicing sleeve 20 of central tube 25 is also connected by the 3rd shear pin 28, and the top of said splicing sleeve 20 is resisted against the bottom of piston tube 16; Said splicing sleeve 20, piston tube 16 are identical with the external diameter of fluid cylinder outer tube 5, and one can bore compensating jacket cover 2 is sheathed on the outer wall of splicing sleeve 20, piston tube 16 and fluid cylinder outer tube 5 and extends upward to the top connection 3 and drill pipe nipple 1 outside; The external tubulose anchor fluke seat 33 of the lower end screw thread of said central tube 25 is also fixing by the 5th anti-rotation pin 34; Shown in Fig. 3 A, Fig. 3 B; Said anchor fluke seat 33 tops form a plurality of pin joint seats 331 that are uniformly distributed with around central tube 25 outer walls, and anchor fluke seat 33 bottoms are provided with the external screw thread 332 that connects screen casing; Articulate an anchor fluke 31 by bearing pin 32 on said each pin joint seat 331; Shown in Fig. 4 A～Fig. 4 D; Said anchor fluke 31 is the tube wall that axially is posted by central tube 25; Its bottom and pin joint seat 331 articulate, and said anchor fluke 31 upper end medial surfaces form from bottom to top gradually away from the inclined-plane 311 of central tube 25 outer walls, and said anchor fluke 31 outsides are along being circumferentially with the serrate slot 312 that can be anchored in the borehole wall; The external tubulose cone 30 of said splicing sleeve 20 bottom screw threads, fit and be provided with in the inclined-plane 311 of the conical surface of said tubulose cone 30 and a plurality of anchor fluke 31.
The course of work of said Multilateral Wells screen casing grappling compensation arrangement is: in fishbone Multilateral Wells completion process, the screen casing string that utilizes drilling rod to be connected with drill pipe nipple 1 will to have this device is down to design attitude.Hydraulic pump is suppressed open- work 72,73 through pipe 7 in said and is entered into the first order and second level fluid cylinder (that is: enter into first annular piston 10 and second annular piston, 11 upside spaces); Hydraulic pressure is cut off the solder joint of said first shear pin 1 and said the 3rd shear pin and said anchor fluke 31 thereof, the said piston tube of said first annular piston 10 that makes the twin-stage fluid cylinder and second annular piston 11 promotions downwards 16, splicing sleeve 20, can bore compensating jacket 2 and tubulose cone 30.Said tubulose cone 30 brute forces press off four anchor flukes 31; In the bore hole borehole wall, form the purpose that deep trench that four roads are parallel to central axis reaches the grappling screen casing through four said anchor flukes 31.Grappling reaches the requirement continued to be suppressed, and pressure is cut off said second shear pin 24, pushes the said pipe 21 of giving up downwards open, shelves post 22, taper stay pipe 26 move; A plurality of corpus unguis 182 of said resolution tine 18 lose support and the elastical retraction of said taper stay pipe 26; It is broken away from said central tube 25 is threaded; The operation that completion is given up; The whole part that sets is proposed pit shaft, stay parts such as to bore compensating jacket 2, splicing sleeve 20, central tube 25, tubulose cone 30, anchor fluke 31 and anchor fluke seat 33.Thus, can prevent that the borehole collapse between main borehole and the anchoring device from blocking whole branch well hole, play the support borehole wall and sand control effect, prolong the application life of branch well hole, reach the purpose that improves well yield.
Further; As shown in Figure 1; In this embodiment, said bottom of boring compensating jacket cover 2 inwardly is convexly equipped with an annular boss 201, and the outer wall lower end of said splicing sleeve 20 is to forming the end difference 202 that contracts in by annular boss 201; Said annular boss 201 is arranged in this end difference 202, and the bottom of this annular boss 201 is resisted against the top of tubulose cone 30.
In this embodiment, the said compensating jacket cover 2 that bores is to strengthen the thermoset phenolic resin material by carbon fiber to process.
As shown in Figure 1, in this embodiment, said taper stay pipe 26 is sheathed on bumping post 22 lower ends and is connected in the baffle ring 27 of bumping post 22 bottoms by a spiral fixing.
In this embodiment; As shown in Figure 2; The common formation of the outer wall of a plurality of corpus unguis 182 of said distinguish tine one periphery, this periphery is provided with external screw thread 183, and the upper end of said central tube 25 is provided with internal thread; After a plurality of corpus unguis 182 inboards were resisted against the side of taper stay pipe 26, the external screw thread 183 on the said periphery was threaded with the internal thread formation of central tube 25 upper ends.
Like Fig. 1, shown in Figure 2, in this embodiment, said distinguish tine body 181 is convexly equipped with a stop ring 184 to the inside with the binding site of corpus unguis 182; The said pipe 21 upper end tube walls of giving up are provided with a bulge loop 211, said bulge loop 211 lateral surfaces and the 181 inner wall sealing sliding-contacts of distinguish tine body laterally; Said tube wall of giving up pipe 21 contacts with the medial surface of said stop ring 184.
As shown in Figure 1, in this embodiment, the inwall of said tubulose cone 30 fits in the outer wall of central tube 25 slidably; The inwall of said tubulose cone 30 is provided with an annular groove, is provided with a tight lock ring 29 (shown in Fig. 5 A, Fig. 5 B) in the annular groove; Said tight lock ring 29 internal faces and central tube 25 outer walls are provided with and stop tubulose cone 30 along teeth (not shown) sliding on the central tube 25.
In this embodiment, it is identical with central tube 25 peripheries circular-arc that the cross section of said anchor fluke 31 is, so that anchor fluke 31 can be posted by the outer wall of central tube 25; Anchor fluke 31 is the wide shape in narrow centre, two ends vertically; Fix by spot welding after said each anchor fluke 31 is the tube wall that axially is posted by central tube 25, in this embodiment, adopt the sidewall and the fixing mode that are welded in adjacent two anchor flukes 31 by short connecting rod two-end-point.
In this embodiment, said anchor fluke 31 and pin joint seat 331 correspondence respectively are provided with four; Said anchor fluke 31 is to be processed by 42CrMo or 35CrMo with anchor fluke seat 33.
In this embodiment, the top of the bottom of said piston tube 16 and splicing sleeve 20 convexes with the flange that is resisted against distinguish tine body 181 slidably respectively to the inside.
From the above mentioned, the key problem in technology of the utility model mainly is:
(1) the integrally-built design of Multilateral Wells screen casing grappling compensation arrangement.
Multilateral Wells screen casing grappling compensation arrangement in a covering device, realized twin-stage fluid cylinder, rotation grappling, on carry or rotational release and can bore four major functions such as compensating jacket.Twin-stage fluid cylinder area can reach 20000mm
2, the thrust of generation 40t when 20MPa, anchor fluke produces the grappling extruding force of 35t to the borehole wall simultaneously.This device can adopt to be carried or rotates two kinds of modes of giving up, and suppresses 25MPa before giving up, and then can be rotated the operation of giving up if the mode tonnage of upper lifting pipe post is excessive.
(2) development of Multilateral Wells screen casing grappling compensation arrangement anchor portion.
Anchor fluke, bearing pin and anchor fluke seat are to use high strength alloy steel 42CrMo and 35CrMo to make and form, and shapeliness is as hoe, and front end is thin and narrow, and tangent plane is very sharp and can fit with cone fully, the centre thickening that broadens gradually, the intensity and the anchoring effect of raising anchor fluke.The design of four anchor flukes can increase the contact area of this device to greatest extent on the one hand, guarantees the stability and the reliability of grappling; Anchor fluke opens the back maximum outside diameter fully and can reach 520mm on the other hand, can satisfy the various forms of bore hole boreholes wall.
(3) development of Multilateral Wells screen casing grappling compensation arrangement compensating jacket.
The composite material that the compensating jacket of Multilateral Wells screen casing grappling compensation arrangement adopts carbon fiber to strengthen thermoset phenolic resin is made, and intensity is higher than glass fiber and strengthens the composite material that tree is processed into.Drillability can be far superior to bore cast iron, and intensity is higher than far away can bore cast iron.The sleeve pipe that is made into can prevent cave-in obstruction well in the Multilateral Wells well.
The beneficial effect of the utility model is:
(1) Multilateral Wells screen casing grappling compensation arrangement can utilize four powerful anchor flukes that whole Multilateral Wells screen casing string is anchored in the well; Prevent the screen casing string in producing in the future from branch well hole play in main borehole, hinder being lowered to of flow string in the main borehole and influence the production of oil well.
(2) one section nothing support well between main borehole and the anchoring device has been filled up in the design that can bore carbon fiber enhancing thermoset phenolic resin compensating jacket in the Multilateral Wells screen casing grappling compensation arrangement; The risk of having avoided therefore section to cave in and cause branch well hole to scrap, big leap ahead application life of oil well.
(3) Multilateral Wells screen casing grappling compensation arrangement has been realized the completion to the fishbone Multilateral Wells through one-trip string, and is rational in infrastructure, and strong operability has improved the efficient of completion, has also shortened the time of back follow-up hole.Improved single oil well yield greatly, reduced drilling cost, also salvaged operation possibility is provided for later screen casing.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (10)
1. Multilateral Wells screen casing grappling compensation arrangement is characterized in that: this grappling compensation arrangement comprises pipe in, and interior pipe middle part is provided with an outward flange; The interior pipe external top connection in upper end, stacks pipe nipple in the top connection upper end; The external fluid cylinder outer tube in top connection lower end is between fluid cylinder outer tube and interior pipe and be positioned at that side seal is provided with first annular piston on the flange; Side seal is provided with second annular piston under flange; Second annular piston extends upward and is provided with tube connector; Be resisted against the lower end of first annular piston behind the tube wall hermetically passing fluid cylinder outer tube of tube connector and the gap between the interior Pipe Flange, the fluid cylinder outer tube is connected by first shear pin with second annular piston; Be respectively equipped with open-work on the said inner pipe wall with first annular piston and the second annular piston upside space conducting; The external piston tube in the said second annular piston lower end, said interior pipe lower end is circumscribed with the distinguish tine; Said distinguish tine constitutes to extending below and be a plurality of corpus unguis that circumferential interval is provided with by body with along body; The circumference internal diameter that corpus unguis surrounds is up-small and down-big flaring shape, sheathed one give up pipe and connected by second shear pin in the body of said distinguish tine; The said pipe of giving up connects a bumping post in the lower end, the taper stay pipe that bumping post lower end fixing sheathed is up-small and down-big, the circumference side of said taper stay pipe and the corresponding contact of the medial surface of a plurality of corpus unguis; A plurality of corpus unguis that said distinguish tine is provided with by circumferential interval are external in the upper end of a central tube; Upper end overcoat one splicing sleeve of central tube is also connected by the 3rd shear pin, and the top of said splicing sleeve is resisted against the bottom of piston tube; Said splicing sleeve, piston tube are identical with the external diameter of fluid cylinder outer tube, and one can bore compensating jacket is sheathed on the outer wall of splicing sleeve, piston tube and fluid cylinder outer tube and extends upward to the top connection and the drill pipe nipple outside; The external tubulose anchor fluke seat in the lower end of said central tube, said anchor fluke seat top forms a plurality of pin joint seats that are uniformly distributed with around the central tube outer wall, and anchor fluke seat bottom is provided with the external screw thread that connects screen casing; Articulate an anchor fluke on said each pin joint seat; Said anchor fluke is the tube wall that axially is posted by central tube; Its bottom and pin joint seat articulate, and said anchor fluke upper end medial surface forms from bottom to top gradually away from the inclined-plane of central tube outer wall, and the said anchor fluke outside is along being circumferentially with the serrate slot that can be anchored in the borehole wall; The external tubulose cone in said splicing sleeve bottom, fit in the conical surface of said tubulose cone and the inclined-plane of a plurality of anchor flukes.
2. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1; It is characterized in that: said bottom of boring the compensating jacket cover inwardly is convexly equipped with an annular boss; The outer wall lower end of said splicing sleeve is to forming the end difference that contracts in by annular boss; Said annular boss is arranged in this end difference, and the bottom of this annular boss is resisted against the top of tubulose cone.
3. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1 is characterized in that: the said compensating jacket cover that bores is processed by carbon fiber enhancing thermoset phenolic resin material.
4. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1 is characterized in that: said taper stay pipe is sheathed on the bumping post lower end and is fixed by the baffle ring that a spiral is connected in the bumping post bottom.
5. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1; It is characterized in that: the common formation of the outer wall of a plurality of corpus unguis of said distinguish tine one periphery; This periphery is provided with external screw thread; The upper end of said central tube is provided with internal thread, and after a plurality of corpus unguis inboard was resisted against the side of taper stay pipe, the external screw thread on the said periphery was threaded with the internal thread formation of central tube upper end.
6. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1, it is characterized in that: the inwall of said tubulose cone fits in the outer wall of central tube slidably; The inwall of said tubulose cone is provided with an annular groove, is provided with a tight lock ring in the annular groove; Said tight lock ring internal face and central tube outer wall are provided with and stop the tubulose cone along teeth sliding on the central tube.
7. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1 is characterized in that: the cross section of said anchor fluke is identical with the central tube periphery circular-arc, and anchor fluke is the wide shape in narrow centre, two ends vertically; After being the tube wall that axially is posted by central tube, fixes by said each anchor fluke by spot welding.
8. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1 is characterized in that: said anchor fluke and pin joint seat correspondence respectively are provided with four; Said anchor fluke and anchor fluke seat are to be processed by 42CrMo or 35CrMo.
9. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1, it is characterized in that: the binding site of said distinguish tine body and corpus unguis is convexly equipped with a stop ring to the inside; The said pipe upper end tube wall of giving up is provided with a bulge loop laterally, said bulge loop lateral surface and distinguish tine inboard wall of tube body sealing sliding-contact; Said tube wall of giving up pipe contacts with the medial surface of said stop ring.
10. Multilateral Wells screen casing grappling compensation arrangement as claimed in claim 1 is characterized in that: the bottom of said piston tube and the top of splicing sleeve convex with to the inside respectively and are resisted against distinguish tine flange of pipe body slidably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205412349U CN202348244U (en) | 2011-12-21 | 2011-12-21 | Anchoring compensation device for branch well sieve tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205412349U CN202348244U (en) | 2011-12-21 | 2011-12-21 | Anchoring compensation device for branch well sieve tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348244U true CN202348244U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205412349U Expired - Lifetime CN202348244U (en) | 2011-12-21 | 2011-12-21 | Anchoring compensation device for branch well sieve tube |
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| Country | Link |
|---|---|
| CN (1) | CN202348244U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418503A (en) * | 2011-12-21 | 2012-04-18 | 中国石油天然气股份有限公司 | Branched well screen pipe anchoring compensation device |
| CN104453758A (en) * | 2014-12-03 | 2015-03-25 | 中国石油天然气股份有限公司 | Multi-functional flap anchor |
-
2011
- 2011-12-21 CN CN2011205412349U patent/CN202348244U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418503A (en) * | 2011-12-21 | 2012-04-18 | 中国石油天然气股份有限公司 | Branched well screen pipe anchoring compensation device |
| CN102418503B (en) * | 2011-12-21 | 2014-02-19 | 中国石油天然气股份有限公司 | Branched well screen pipe anchoring compensation device |
| CN104453758A (en) * | 2014-12-03 | 2015-03-25 | 中国石油天然气股份有限公司 | Multi-functional flap anchor |
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